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When do I Replace a Control Panel PCB Assembly in the Brother MFC-8300 Multifunction Center?

You should replace the control panel PCB assembly if:

The LCD shows nothing – You should check the harness between the main PCB and the control panel PCB for damages, and replace it if necessary. Please replace the control panel PCB assembly if the problem persists.

The control panel of your Brother MFC-8300 Multifunction Center is inoperative

How to Install a Control Panel PCB Assembly in the Brother MFC-8300 Multifunction Center

You must make sure that the Brother MFC-8300 Multifunction Center is switched off, and then unplug the power cord. Next, you must push the right and left arms of the control panel assembly to release the bosses from the grooves of the scanner frame assembly. After that, you must unplug the panel-main harness while lifting the control panel assembly slightly up, and then remove the control panel assembly from the main unit. Now, you must place the control panel assembly upside down, and then remove the two screws that secure the rear panel cover. In the next step of the replacement procedure, you must unhook the eight latches of the rear panel cover, and then remove the rear panel cover from the control panel assembly. Once the rear panel cover is removed, you must detach the document front sensor actuator, and then release the two latches of the document sensor PCB. Next, you must release the three latches of the control panel PCB assembly, and then detach the LCD flat cable and the FPC key from the control panel PCB assembly. After that, you must remove the control panel PCB assembly, and then unpack the replacement component. Finally, you must install the new control panel PCB assembly by executing the current procedure in reverse order.

How to Install an Ejection Roller Assembly in the Brother MFC-8300 Multifunction Center

In the first step of the replacement procedure, you must turn the Brother MFC-8300 Multifunction Center off, and then unplug the power cord. After that, you must remove the three screws that fix the rear cover to the main unit, and then remove the rear cover. Now, you must remove the screw that secures the right access plate to the front access plate, and then remove the two screws that fix the access plates to the main frame of your Brother MFC-8300 Multifunction Center. In the next step of the replacement procedure, you must take the access plates out of the machine, and then release the bosses of the control panel assembly. Once the three bosses are released, you must disconnect the main harness of the control panel assembly, and then pull the control panel assembly upwards to remove it from the main unit. Next, you must push the arm rib of the exhausted ejection roller assembly towards the rear side of the machine, and then remove the exhausted component by pulling it upwards. Finally, you must unpack the new ejection roller assembly, and then install it by executing the current procedure in reverse order.